Welder&#39;s hood



Sept. 18, 1945.

o. J; o. CONWAY WELDERS HOOD Filed May 31, 1945 2 Sheets-Sheet l ,7 ,8Fig l. /2 6 Fig. 5.

I 8 Z'Snventot 05 0 1- 0/500 Conway (Ittorneg Sept. 18, 1945. o. J. o.CONWAY WELDER S HOOD Filed May 51, 1945 2 Sheets-Sheet 2 l'mventor 0770Q J 0/50! Conan] 7 (Ittomcg Patented Sept. 18,1945

UNITED STATES PATENT OFFICE WELDERS HOOD Otto J. Olson Conway, Tacoma,Wash.

Application May 31, 1943, Serial No. 489,122

4 Claims.

This invention relates to welder's hoods and more specifically to themechanism for moving the colored glass to or from the window of such ahood.

The objects of my invention are, first, to provide means forremoving thecolored glass from the line of sight of the welder without having to usethe hands or to interrupt the continuity of action of the welder,thereby saving time and effort and expediting his work; and second, toaccomplish this movement with the simplest possible mechanism.

I attain these and other objects by the devices, mechanisms andarrangements illustrated in the accompanying drawings, in which Fig. 1is a vertical section of the preferred form of my invention, showing thecolored glass in its normal position in front of the hood window; Fig. 2is an inside elevation of the colored glass window frame and itsmounting; Fig. 3 is a section of the metal tape used for operating thewindow i its form shown in Fig. 1; Fig. 4 is a view, 5 ar to Fig. l, inwhich the colored glass has been removed from the line of vision; andFigs. 5 and '6 are views similar to Fig. 1, showing two variations ofthe mechanism for operating the colored glass window.

Similar numerals of reference refer to similar parts throughout theseveral views.

In the practice in the art of welding it is necessary for the weldershead to have protection from the splash and rays emitted by theweldingoperation, and this protection is provided in the form of a hood orhelmet which, normally, is pivotally mounted on a headband, encompassingthe head of the welder, in such manner that it can be either hung infront of the face or swung above the head when not in use. This hood isprovided with a window, placed in the line of sight of the wearer, andcomprising a series of sheets of clear glass adapted to protect the eyesand face from the heat .and spray of the welding operation withoutinterfering with the clear vision, and also a sheet of colored glassadapted to protect the eyes from the injurious rays emitted by the weldwhile it is being made. Howeverithe colored glass interferes somewhatwith clear viimhence it has been the practice when using the customaryTwelderis hood, for the welder to swing the hood up over tli'e"head,when the weld is not actively being made, in order that the work may beclearly seen and inspected. This act makes it necessary to release anduse at least one hand to raise the hood, and it is the general purposeof my invention to eliminate this waste motion and the time consumed inperforming this act.

Referring to Figs. 1-4, inclusive, wherein the preferred form ,of myinvention is illustrated. The hood I is mounted on the head band 2 bymeans of the usual pivot connection 3, and its chin-rest 4 engages thechin of the wearer to hold the hood I in proper position when in use.The window frame 5 is secured to the outside of the hood I, in the lineof vision, and contains a plurality of sheets of clear glass 8. A metalsheet 1 is secured'to the inner side of the hood I, in front, said sheethaving a suitable hole coordinated with the window 5 and also having itsside edges turned to form two parallel guides 8 (Fig. 2). A metal frame9 slides vertically in said guides 8 .and carries the sheet of coloredglass III. Normally this frame 9 with the glass I0 is held in itsuppermost position, directly in the line of vision, and effectivelyprotects the eyes from the deleterious effects of the weld rays. Thisframe 9 is adapted to he slid downward out of this operating position bythe following described mechanism:

A central plate II is secured to the lower front of the hood I, and itssides are turned at rightangles' to form the parallel brackets I2. Thechin-rest 4 is mounted on a pair of arms I3, pivoted at I4 bet-ween thesaid brackets I2.

The operating mechanism is also pivoted between the brackets I 2, at I5,and comprises the lever I6 extending on both sides of the pivot I5. Theinner end I! of the lever I6 is provided with an adjusting screw I8which engages under the bar I9 forming a part of the arms I3, thusholding the chin-rest 4 in normal position by means of the spring 20,engaging the lever I6 and the plate II.

A quadrant 2I is pivoted at 22 to the brackets I2 and is provided with aperipheral flange. The outer end of the lever I Ii is provided with apin 23 which engages in a radial slot 24 in the said quadrant 2| in suchmanner that when the inner end I! of the lever I6 is depressed, againstthe action of the spring 20, the said quadrant H is turned on its pivot22. The periphery of the quadrant is connected to the window frame 9 bymeans of a concaved metal tape 25 (Figs. 1-3), one end of which issecured to the flange of the quadrant 2| and the other end of which i ishooked into a loop 26 formed on the lower member of the frame 9. Theconcave form of the metal tape" 25 insures its having sufllcientstiffness to raise the frame 9, under the action of the spring 20(Fig. 1) while allowing suflicient Thus it is evident that by slightlydepressing the chin the wearer forces the chin-rest 4 down, thus movingthe lever IE to turn the quadrant 2|, to wind the tape 25 on itsperiphery, and to draw the frame 9 down, thus removing the colored glassl from the line of sight, against the action of the springifl. 7

Referring, now, to Fig. it will be seen that the same action on theframe 9 is attained through a system of levers mounted on the innersides of the two sides of the hood I. The chinrest 4 is mounted on apair of levers 21, pivoted at 28 to the sides of the hood I. The frame 9has ears 29 which are pivotally connected to the ends of another pair oflevers 30. These levers 30 are provided with slot Jl through which thefixed pivot pins 32 pass. The levers 30 are connected to the free endsof the levers 21 by means of links 33, which may be adjusted in lengthby suitable means, such as the turn-buckles 34. Springs 35 connectedbetween the hood I and the levers 30 hold the frame'9 in its upperposition: It is to be understood that the leverage, above described, isduplicated on each side of the hood I, and. that the parts are suitablyformed to fit against the sides of the hood.

Thus it will be seen that depressing the chin against the action of thesprings 35, pulls the frame 9 and its colored glass l9 down out of theline of vision, and that releasing the downward pressure of the chinreturns the glass l0 up to its position in the line of sight. Referring,now, to Fig. 6 it will be seen tha the motion of the frame 9 and glassIll has been reversed from that above described, that is to say, theline of sight is slightly lower, in relation to the top of the hood Iand the frame 9 is lowered in its slide, when in use, and is raised whenremoved from the line of sight (Fig. 6). To accomplish the action thepositions of the pivots 32 andv springs 35 are changed, as clearly seenin the drawings, otherwise the action is the same as in the form shownin Fig. 5.

Since the head band 2 supports the hood I, it is evident that themovement of the wearer's chin will not move the hood but will move theabovedescribed mechanisms and that, therefore, it is unnecessary for thewelder, when he wishes to inspect his work, to drop his tools or to movehis hood in any way, but simply to slightly lower his chin in relationtohis head, in order to accomplish the removal of the colored glass fromthe line of vision.

The necessary adjustment of the chin-rest 4 to fit the wearers face isaccomplished, of course, by the screw H3 or the turn-buckles 34.

It is, of course, to be understood that many other variations of myinvention, besides those illustrated and described, may be resorted towithout departing from the spirit of my invention as outlined in theappended claims.

Having, therefore, described my invention, what I claim and desire tosecure by Letters Patent, is:

1. In a welders hood having a colored glass eye-shield movably. mountedtherein and normally lying in the line of sight; in combination with a.chin-rest pivotally supported in the hood and flexure to permit itsfreely bending around the peripheral flange of the quadrant 2| (Fig. 4).

adapted to engage the wearer's chin; a lever pivotally mounted in saidhood and adapted to be energized by the movement of said chin-rest;means including a metal tape and a swingable quadrant for connectingsaid lever with said eyeshield whereby the movement of the chin-restwill cause the lever to rock the quadrant and wind the tape thereon tomove the eye-shield out of the line of sight; and a spring engaging saidlever and through the medium of the tape and quadrant holding theeye-shield in its normal position, the portion of said tape extendingfree of the quadrant being arcuate in cross-section to give rigidity tothe free tape portion.

2. In a welders hood having a colored glass eye-shield movably mountedtherein and normally lying in the line of sight; a chin rest movablysupported in the hood and adapted to engage the wearer's chin; aquadrant pivotally mounted in the hood and operatively connected to thechin rest so as to be energized by the movement of the chin-rest; ametal tape supporting the eye-shield and being connected to the arcuateportion of the quadrant, the part of the tape extending between thequadrant and eye-shield being arcuate in cross section so as to form arigid support, the quadrant having a periphery for flattening the tapecontacting therewith for permitting the contacting portion of the tapeto follow the quadrant periphery when the quadrant is moved to wind thetape-thereon; and yielding means for causing the quadrant to hold theeye-shield in normal position.

3. The combination with a welders hood; of a chin rest pivotally carriedby the hood; a lever actuated by the chin rest; a spring for holding thelever in normal position; a quadrant pivotally carried by the hood andoperatively connected to the lever so that a lowering of the chin willswing the quadrant; a colored glass eye-shield movably mounted in thehood 'and normally lying in the line of sight; a metal tape connectingthe quadrant with the eye-shield, that portion of the tape extendingfree of the quadrant being arcuate in cross-section so as to provide arigid support for the eye-shield; whereby a lowering of the .chin willrock the quadrant for windin a portion of the tape thereon for movingthe eye-shield out of the line of sight.

4. The combination with a, welders hood; of a chin rest pivotallycarried by the hood; a lever actuated by the chin rest; a spring forholding the lever in normal position; a quadrant pivotally carried bythe hood and operatively connected to t e lever so that a lowering ofthe chin will swing the quadrant; a colored glass eye-shield movablymounted in the hood and normally lying in the line of sight; a metaltape connecting the quadrant with the eye-shield, that portion of thetape extending free of the quadrant being arcuate in

